Two Israeli aircraft appearing to be spy planes flew near Budapest's international airport last week but did not land there, Hungarian media reported Thursday.

According to the reports, the planes were on a "spy mission" that may be connected to the assassination of a Syrian national in his vehicle Wednesday in the Hungarian capital.

The two Gulfstream planes, reportedly equipped with the IDF's finest intelligence means, flew through Turkey, Bulgaria, and Romania before entering Hungary's airspace, the media outlets said. The aircraft were said to leave Hungary after completing their mission, without ever landing in the country.

Responding to media questions, a spokesman for the Hungarian Defense Ministry said that the Israeli planes were on a diplomatic mission.

Meanwhile, the Hungarian Foreign Ministry said that air traffic in the country is under the jurisdiction of the local aviation authority. The Ministry refused to address questions regarding the nature of the mission that prompted the Israeli planes to arrive in Hungary.

The identity of the Syrian national assassinated in Budapest had not yet been published. Hungarian police officials said an unknown assassin shot the 52-year-old Syrian while he was driving his car. The shooter grabbed a black briefcase from the vehicle before fleeing the scene of the attack, police said.